Carrier route record

F9JFK→LAS

Frontier Airlines · New York to Las Vegas

Flights: 203
Period: July 2025 to June 2026
Share of route: 5%
Carriers: 4

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.

Frontier on JFK to LAS draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 203 flights. The strongest carrier on the route with a full sample, American Airlines, flew 460 at 84.0% on time.

American Airlines is the most reliable of the three carriers covered here at 84.0% on time across 460 flights.

On time

65.0%

Arrivals under 15 minutes late, of 200 completed flights

Avg delay

65 min

Across delayed arrivals only, not all flights

Cancelled

1.48%

National rate is 1.81%

Whole route

79.9%

Every carrier on JFK to LAS, 3,714 flights

These figures cover 203 flights between July 2025 and June 2026. Beyond the headline rate, 12.0% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Carrier by carrier

Frontier against every carrier on JFK to LAS

Frontier flew 203 of the 3,714 flights on JFK to LAS, about 5% of it. Its 65.0% on time is 15 points worse than the route as a whole, which runs 79.9%. Ranked by on-time rate it is last of four carriers on the route, where the range runs from American at 84.0% to Frontier at 65.0%.

The three carriers here are closely matched: 6 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.

On-time performance by carrier on JFK to LAS
Airline	Flights	On time	Avg delay	Cancelled	Grade
American Airlines	460	84.0%	108 min	1.74%	B
JetBlue Airways	1,375	82.4%	65 min	2.25%	B
Delta Air Lines	1,676	78.5%	53 min	2.33%	B
Frontier Airlines (this page)thin sample	203	65.0%	65 min	1.48%	C

No carrier stands out. American tops the table at 84.0%, 6 points clear of the bottom, which is inside the range this kind of sample moves year to year.

Departure window

When Frontier runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 10 points, against 6 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am166 flights66.9%
8am–11am37 flights56.8%
11am–2pm—
2pm–5pm—
5pm–8pm—
8pm–5am—

Scale runs 50% to 70%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 66.9% of the time, against 56.8% for the morning window. That is 10 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 166 flights scheduled in it.

Across the year

Frontier on JFK to LAS through the year

Jul–Sep 202592 flights71.4%
Oct–Dec 202592 flights58.2%
Jan–Mar 202619 flights—

Scale runs 50% to 75%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 65.0% on time across 203 flights.

Split by quarter, Frontier on JFK to LAS logged 92 flights in Jul–Sep 2025, 92 flights in Oct–Dec 2025 and 19 flights in Jan–Mar 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 65.0% annual figure is the one to use.

Delay causes

Why Frontier runs late on this route

One category carries most of the weight here. Carrier accounts for 52% of the 4,532 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
52%
National Airspace System
28%
Late-arriving aircraft
19%
Extreme weather
1%

The largest share of delay minutes, 52%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,341 of the 4,532 delay minutes reported here. The split is drawn from 4,532 reported delay minutes.

Cancellations sit at 1.48% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.0% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

At 2,248 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The return leg is a different operation and performs like one: it runs 81.5% on time across 202 flights, 17 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 17 points of difference.

One caution: this is a thin sample. 203 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking Frontier on JFK to LAS

Put together: treat all of this as provisional. 203 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 65.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 200 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures